When will TSR hit 1 million members? A years subscription for whoever's closest!

Back in August 2010 we hit 500,000 members, and this past weekend we broke through 600,000. That's 4 months and 100,000 members.

At this rate, and with the busiest periods of site usage still ahead of us this year, when will the site hit 1 million users?
Will we sneak it before the end of the year? Or have to wait until 2012?

So here's a little competition to make things a little more interesting...

Put your date in this thread, and whoever is closest will win a yearly subscription to the site. I'll be making my own guess in good time

This thread won't remain open forever, so get guessing
(the figure is taken from the number displayed towards the bottom of the all forums page: http://www.thestudentroom.co.uk/index.php)